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Showing the performance of VB.NET within Visual Studio 2010

Posted on 2010-08-20
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Hi all

I have a small VB.NET application that connects to a SQL database, runs some queries and emails the results.
There are quite a few areas in the code that I know can be streamlined to make the app run faster, however, I'd like to be able to see just how much of an improvement the changes to the code will make.

Can anyone advise how to view the impact on system resources that an application uses when it runs, so that I might see the difference when I change the code?  Also are there any other items that I should be watching for?

I'm using Visual Studio 2010 Professional.
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Question by:Rouchie
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Dennis Aries earned 125 total points
ID: 33483061
Check out the following articles
http://msdn.microsoft.com/en-us/library/ms998579.aspx - Measuring performance
http://msdn.microsoft.com/en-us/library/ms998581.aspx - Testing performance
http://msdn.microsoft.com/en-us/library/ms998583.aspx - Tuning performance

All part of the Improving .NET Application performance and Scalability (http://msdn.microsoft.com/en-us/library/ff649152.aspx)
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by:Sarika30
Sarika30 earned 125 total points
ID: 33483062
You can see the CPU usage from the task manager. Under the Processes tab you can see the CPU counter used by the application. You can see the CPU performance under the performance tab.
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by:joriszwaenepoel
joriszwaenepoel earned 125 total points
ID: 33483777
Usually I use code like this to test the duration of a block of code:

dim start as datetime = datetime.now
' .... do the work here
dim duration = datetime.now.dubtract(start)
debug.writeline("duration: " & duration.totalmilliseconds & " ms")

If the duration is too short to notice the difference, you could use a loop to execute your code 100  or 1000 times.

However, your performance is influenced by other tasks running on your PC, so if you want accurate results, you probably need to test the duration several times.
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by:mastoo
mastoo earned 125 total points
ID: 33485445
The above work, but if you are going to do much of this you might look at something like the red-gate ants profiler.  It quickly shows areas to focus on for performance gains.
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